Why EMAC0 of Cyclone® V SOC HPS is not counting packets like EMAC1?

Description

Due to a problem in the Cyclone® V SoC HPS, EMAC0 is not constantly counting the incoming packets as EMAC1 does. Some packets might be lost in counting. However, they have been received by the system.

Resolution

To work around this problem in the Cyclone® V SoC HPS EMAC0, you need to follow the steps below:

1- Operate the RxFIFO in the store-and-forward mode.

2- Operation_Mode Register: located at the address:

0xFF701018 (for EMAC0)

0xFF703018 (for EMAC1)

Set bit 25 (“rsf” bit) to 0x1